The nora® Astro form 8 expanded rubber sheet – 318 ice blue is a lightweight, soft cushioning material developed for orthotic, prosthetic, and orthopedic footwear applications where high comfort, excellent recovery, and reliable shock absorption are required. The material combines very good resilience with low compression set, allowing it to maintain its cushioning performance even under repeated loading.
Astro form 8 provides effective pressure distribution and impact reduction, making it ideal for sensitive foot applications, diabetic footbeds, and prosthetic or orthotic padding. The material is soft enough for comfort while still offering sufficient stability for medium-load applications, ensuring long-term durability and consistent performance.
The closed-cell surface structure prevents moisture penetration and allows hygienic cleaning, making the material suitable for clinical use. It is also thermoformable and easy to bond, allowing efficient processing in both traditional fabrication and CAD/CAM workflows.
Key Features
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Lightweight expanded rubber cushioning material
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Soft with excellent recovery capability
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Low compression set under repeated load
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Outstanding shock absorbing properties
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Even pressure distribution
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Closed-cell, hygienic and washable surface
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Skin tolerance tested and certified
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Excellent bonding properties
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Thermoformable for custom shaping
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Trusted nora® quality material
Technical Specifications
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Material: nora® Astro form 8 expanded rubber
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Colour: 318 Ice blue
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Density: approx. 0.21 g/cm³
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Sheet Size: approx. 770 × 560 mm (30.3" × 22.0")
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Thickness Options:
Performance & Properties
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Extremely soft with strong elastic recovery
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Excellent cushioning and shock absorbance
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Low compression for long-term durability
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Hygienic closed-cell structure
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Disinfectable surface
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Dermatest certified skin compatibility
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Suitable for pressure-sensitive applications
Processing Notes
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Thermoformable at approx. 110° – 130°C (230° – 266°F)
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Excellent bonding with standard adhesives
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Suitable for lamination with EVA, rubber, cork, and orthotic materials
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Easy to cut, grind, and shape
Typical Applications in Orthotics & Prosthetics
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Cushioning in orthotic insoles
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Forefoot replacement cushioning
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Haglund heel padding
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Heel spur relief cavities
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Diabetic footbed cushioning layers
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Prosthetic interface padding
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Upper cushioning for peroneal or ankle caps
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Orthotic top covers
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Rehabilitation footwear
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Cushioning in braces and supports
The nora® Astro form 8 expanded rubber sheet provides a balanced combination of softness, resilience, and durability, making it ideal for orthotic, prosthetic, and orthopedic footwear fabrication where reliable cushioning and long-term comfort are required.
